Knife sharpening tool



FIG. 1 is a front, right and top perspective view of a knife sharpening tool, showing my design.

FIG. 2 is a rear, left and bottom perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a right side elevation view thereof.

FIG. 7 is a top plan view thereof.

FIG. 8 is a bottom plan view thereof.

FIG. 9 is an enlarged view of detail 9 in FIG. 1 .

FIG. 10 is an enlarged view of detail 10 in FIG. 2 .

FIG. 11 is an enlarged view of detail 11 in FIG. 2 .

FIG. 12 is an enlarged view of detail 12 in FIG. 3 ; and,

FIG. 13 is an exploded view thereof.

The broken lines depict portions of the knife sharpening tool that form no part of the claimed design.

The dot-dash broken lines in FIGS. 1, 2, 3, 9, 10, 11 and 12 depict the boundaries of the enlargements that form no part of the claimed design. 

CLAIM The ornamental design for a knife sharpening tool, as shown and described. 